diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 973870ebff69..728d60be8975 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1665,6 +1665,9 @@ static void serial8250_start_tx(struct uart_port *port) serial8250_rpm_get_tx(up); + if (!port->x_char && uart_circ_empty(&port->state->xmit)) + return; + if (em485 && em485->active_timer == &em485->start_tx_timer) return; |